- Fake Nationality: Rottenmeier is played by an Argentinian actress and doesn't look or sound German in any way. The only way to know she's supposed to be German is that she says "Fräulein" a lot.
- Playing Their Own Twin: Imanol's and his identical twin brother Oliver Conejo are played by the same actor. They conveniently never appear on screen together.
Trivia / Heidi, bienvenida a casa